Sheet metal processing of chassis and cabinets

Causes: Fiberglass wall or material; polyester filler (atomic ash) is not mixed enough; organic solvent bubbles are still left on the polished exterior; polyester filler (atomic ash) is not enough inside the lap.

Prevention method: Completely mix the polyester filler (atomic ash); do not polish the organic solvent bubble, or completely eliminate the paint film of the bending sheet metal processing problem; add sufficient polyester filler (atomic ash).

Salvage: Eliminate the problematic paint; sand and apply polyester filler (atomic ash); spray paint on the primer and then spray paint again.

Situation: The car paint shows hot bubbles and bubble marks.

Cause: Organic solvent gas hides within the paint film and escapes afterwards, leaving bubble marks, commonly formed for the following reasons as shown below: paint film spraying too thick, applying too fast drying in sealing hardener or paint thinner; spray paint gun nozzle (specifications) or spray paint viscosity or spray paint standard air pressure is wrong; not enough resting time before warming up and drying or not enough auto paint room cyclone.

Prevention method: Precision sheet metal processing plant recommends using reasonable spray paint viscosity, spray paint standard air pressure, spray nozzle specifications; using moderate sealing curing agent and paint thinner; giving sufficient resting time.

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